Write a program, using a recursive method to calculate n!

CodePudding user response:

What are the requirements for???

CodePudding user response:

 
#include 
using namespace std; 
Int fun (int n)//you can put the fun into arbitrary function name, here I write letters before the function directly 
{
If (n==1) {
return 1;//termination, no longer recursive 
} 
Return fun (n - 1) * n;//n times of factorial n - 1 
} 
Int main () 
{
int n; 
Cin> n; 
coutreturn 0; 
} 

This is to use recursive, pay attention to the input number can't be too big